From: Ameya Palande Subject: Re: CONFIG_CPU_IDLE broken for N900 Date: Tue, 10 Aug 2010 16:43:16 +0300 Message-ID: <1281447796.17541.33.camel@chotu> References: <1281442891.17541.26.camel@chotu> <1281443718.17541.29.camel@chotu> <20100810160324.8df82287.jhnikula@gmail.com> Mime-Version: 1.0 Content-Type: text/plain; charset="UTF-8" Content-Transfer-Encoding: 7bit Return-path: Received: from smtp.nokia.com ([192.100.122.233]:47836 "EHLO mgw-mx06.nokia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1757694Ab0HJNn2 (ORCPT ); Tue, 10 Aug 2010 09:43:28 -0400 In-Reply-To: <20100810160324.8df82287.jhnikula@gmail.com> Sender: linux-omap-owner@vger.kernel.org List-Id: linux-omap@vger.kernel.org To: ext Jarkko Nikula Cc: "linux-omap@vger.kernel.org" , Kevin Hilman , "Kristo Tero (Nokia-MS/Tampere)" Hi Jarkko, On Tue, 2010-08-10 at 15:03 +0200, ext Jarkko Nikula wrote: > On Tue, 10 Aug 2010 15:35:18 +0300 > Ameya Palande wrote: > > > > When I enable CONFIG_CPU_IDLE and boot kernel, it hangs around the point > > > when it switches to user space. I am able to reproduce this for 2.6.35 > > > on linux-omap and linux-2.6 trees. > > > > > > Has anyone else noticed the same thing for omap3 based boards? > > > > Broken on linux-omap-pm as well! > > > I'm able to reproduce with 2.6.35-rc1 but not with l-o head. It seems > that the commit below fixes this. > > commit c786bcf12e092802496f1bc440b2b189144612a5 > Author: Kevin Hilman > Date: Thu Jun 3 17:13:22 2010 +0000 > > OMAP3: PM: fix IO daisy chain enable to use PM_WKEN reg Just tested it on linux-omap with omap3_defconfig and found that it is broken. When kernel bootup is complete, and it switches to user space, device hangs. When I disable CPU IDLE, it works.. Cheers, Ameya.